6611371278 has 64 divisors (see below), whose sum is σ = 13878853632. Its totient is φ = 2097393920.

The previous prime is 6611371267. The next prime is 6611371289. The reversal of 6611371278 is 8721731166.

It is an interprime number because it is at equal distance from previous prime (6611371267) and next prime (6611371289).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4427500 + ... + 4428992.

It is an arithmetic number, because the mean of its divisors is an integer number (216857088).

Almost surely, 2^6611371278 is an apocalyptic number.

6611371278 is an abundant number, since it is smaller than the sum of its proper divisors (7267482354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6611371278 is a wasteful number, since it uses less digits than its factorization.

6611371278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1969.

The product of its digits is 84672, while the sum is 42.

The square root of 6611371278 is about 81310.3393056504. The cubic root of 6611371278 is about 1876.8541093398.

The spelling of 6611371278 in words is "six billion, six hundred eleven million, three hundred seventy-one thousand, two hundred seventy-eight".